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External SSDs

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Corsair EX400U 1TB vs SanDisk Extreme Portable 1TB

Compare Corsair EX400U 1TB and SanDisk Extreme Portable 1TB side by side. Both are 1TB USB4 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Corsair

Corsair EX400U 1TB
9.0/10

A 1TB USB4 portable — 3300 MB/s read on a Thunderbolt 4 / USB4 host. The EX400U is the rare USB4 drive that supports the full 40Gbps link (not all USB4 drives do). 5-year warranty is best-in-class for the speed tier.

USB4 3300 MB/s read
5-year warranty
Full 40Gbps USB4 link
Check on Amazon →

SanDisk

SanDisk Extreme Portable 1TB
8.5/10

The non-Pro Extreme is the lower-cost sibling — same 1050 MB/s rated read and IP55 rugged body, but writes top out well below Extreme Pro on sustained workloads. A solid buy when the write-speed gap doesn't matter (game consoles, file transfer, backup) but the rugged rating does.

IP55 rugged body
Same 1050 read as Extreme Pro
Cheaper than Pro by a wide margin
Check on Amazon →

Spec Comparison

Spec
Corsair EX400U 1TB
SanDisk Extreme Portable 1TB
Read Speed
3.3 GB/s ✓
1.1 GB/s
Write Speed
3.0 GB/s ✓
1.0 GB/s
Capacity
1 TB
1 TB
Interface
USB4
USB 3.2 Gen 2
Endurance (TBW)
600 TB
600 TB
Warranty
5 Years ✓
3 Years
Score
9.0/10 ✓
8.5/10
Total Wins
4 wins
0 wins

Frequently Asked Questions

Which is better, Corsair EX400U 1TB or SanDisk Extreme Portable 1TB?
The Corsair EX400U 1TB scores 9.0/10 compared to 8.5/10 for the SanDisk Extreme Portable 1TB. Our expert analysis favors the Corsair EX400U 1TB for its superior speed.
What's the difference between Corsair EX400U 1TB and SanDisk Extreme Portable 1TB?
The key differences: The Corsair EX400U 1TB offers 3,300 MB/s reads vs 1,050 MB/s for the SanDisk Extreme Portable 1TB. Capacity options differ: Corsair EX400U 1TB is 1TB while SanDisk Extreme Portable 1TB is 1TB. The Corsair EX400U 1TB uses USB4 while the SanDisk Extreme Portable 1TB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U 1TB or SanDisk Extreme Portable 1TB?
The Corsair EX400U 1TB is faster with 3,300 MB/s read speeds compared to 1,050 MB/s for the SanDisk Extreme Portable 1TB. That's a 214% speed advantage.
Which has better value, Corsair EX400U 1TB or SanDisk Extreme Portable 1TB?
The Corsair EX400U 1TB scores higher (9.0 vs 8.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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